帝国CMS后台系统设置里面的扩展变量是干什么的?_html/css_WEB-ITnose
这个功能的位置就是在于后台系统菜单,就可以看到扩展变量这个功能了 如图所示:
1帝国cms后台系统设置里面的扩展变量是干什么的? 帝国cms后台系统设置里面的扩展变量是干什么的?
那么这个具体是干什么的呢?那么这个功能站长朋友们通过自定义扩展变量功能,用户可以自定义公共的程序使用变量,为用户扩展系统带来便利。比如可以增加像系统 $public_r[newsurl]这样的变量,还比如扩展了某个系统模型,需要增加设置项都可以用扩展变量来实现。
下面就做一个简单的例子说明一下:
比如我们要实现模板图片的变量地址,那么就点击该功能,再次点击增加扩展变量,然后就填写我们的变量的信息,如图所示:
2帝国cms后台系统设置里面的扩展变量是干什么的? 帝国cms后台系统设置里面的扩展变量是干什么的?
然后我们需要调用的时候要怎么调用呢,很简单的就如这样的形式$public_r[‘add_变量名’]可取得变量内容,那么我们这里的变量名是temppicpath,那么完整的调用模式是 $public_r[‘add_temppicpath’],比如我们要调用模板css目录中style.css,那么调用的模式是这样的:
<link href="<?=$public_r['add_temppicpath']?>css/style.css" rel="stylesheet" type="text/css" />
那么这个就很方面把整个模板都写活了 如果改变了路径只需要在扩展变量那里去修改即可。那么这个功能的作用就是这样的。
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